Two female victims, aged 18 and 47, were left with life-changing injuries following an incident on The Nursery at around 3pm on July 6.
Two 16-year-old girls were arrested on suspicion of attempted murder following the incident.
But only one has faced charges with the second released on bail pending further enquiries.
The first girl was charged with two counts of wounding without intent and two counts of wounding with intent.
She pleaded guilty to wounding without intent but is due to face trial in the youth court in November on the more serious charges.
She has been remanded in youth detention accommodation until then.
